Enertech Bentone STG 146, Installation And Maintenance Instruction, Page: 11 / 32

172 425 57 08-01
After lockout, the red fault LED is steady on. For reading the cause of fault, refer to the
blink code given in the following table: Diagnosis of cause of fault
AL
FS
LED on (waiting time 10 s)
Fault
Press lockout reset button
for > 3 s
Blink code Off
Blink code
Approx.
3 s
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Control diagnosis under fault conditions and lockout indication
Gas burner control: LMG ...
Error code table
Blink code Possible cause
2 x • No establishment of flame at the end of «TSA»
•• - Faulty or soiled detector electrode
- Faulty or soiled fuel valves
- Poor adjustment of burner
3 x • Air pressure monitor does not close
••• - «LP» faulty
- «LP» incorrectly adjusted
- Fan motor does not run
4 x • Air pressure monitor does not open or extraneous light on
burner startup
•••• - «LP» faulty
- «LP» incorrectly adjusted
5 x • Extraneous light during pre-purging
••••• - Or internal device fault
7 x • Loss of flame during operation
••••••• - Poor adjustment of burner
- Faulty or soiled fuel valves
- Short-circuit between detector electrode and ground
8...17 x • Free
••••••••
..................
••••••••••
•••••••
18 x
• Air pressure monitor opens during pre-purging or operation
•••••••••• - «LP» incorrectly adjusted
•••••••• - Four times loss of flame during operation (LMG25)
19 x • Faulty output contact
•••••••••• - Wiring error
••••••••• - External power supply on output terminal
20 x • Internal device fault
••••••••••
••••••••••
During the time the cause of
the fault is diagnosed, the
control outputs are deacti-
vated.
- The burner remains shut
down
- Exception: fault status sig-
nal «AL» at terminal 10
The burner is switched on
only after a reset is made.
- Press lockout reset button
for 0.5...3 seconds
Red LED on
Connecting signal amplifier
A1 = LMG
GP
R/W
L N
br bl rt sw
sw rt Q1 = AGQ 2...
QRA
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